College Knowledge Institute (CKI) offers free academic eTextbooks. We have compiled hundreds of free academic eTextbooks; saving you substantial time and thousands of dollars on rental and purchase costs.

CKI free academic eTextbooks cover the most popular and empowering college subjects.

College Knowledge Institute Exams award CEUs and Certificates.

College Knowledge Institute academic e-textbooks are carefully selected; they are available in numerous subject areas covering social science, humanities, natural science, engineering, and more. The e-textbooks are written by college professors and published by major book sellers, colleges, and universities. Academic e-textbooks are supplemental resources and references for College Knowledge Institute courses, programs, exams, and certificates.